Elementary treatise on electricity and magnetism : (1905)
Foster, G. C. (George Carey), 1835-1919, Joubert, J. (Jules François), 1834-1910, Porter, Alfred W. (Alfred William), 1863-1939 · London ; New York ; Bombay : Longmans, Green, and Co. · leaf 571
s.—We have seen that when the stream im-pinges upon the walls of the tube it excites phosphorescence ; thisphenomenon is not confined to the inside of the vessel. Lenardhas shown that if the vessel walls are made very thin locally, orif a piece of thin aluminium foil is cemented over a hole in… … Fig. 373. 550 RECENT DEVELOPMENTS [483- its simple character; for it was shown by Roiit<:ren at the end ofthe year 1895 that other rays are now present which cannot bedeflected by a magnet. These are called Rontgen-rays or X-rays. They arise when the cathode stream strikes an obstacle; fromthe…
Electricity · Magnetism
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